Last spring frost
Mar 10
Frost Dates for Wisner, LA
First fall frost
Nov 16
Growing season
250 days
Hardiness zone
8b
In an average year around Wisner, LA, the last spring frost (32°F) is about Mar 10 and the first fall frost is about Nov 16, giving roughly a 250-day growing season. To be safe most years, wait until Feb 17 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Apr 11 | Mar 25 | Mar 4 |
| Freeze (32°F) | Mar 31 | Mar 10 | Feb 17 |
| Hard (28°F) | Mar 16 | Feb 26 | Jan 28 |
| Severe (24°F) | Mar 8 | Feb 4 | Jan 5 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 11 | Apr 5 | Apr 2 | Mar 29 | Mar 25 | Mar 21 | Mar 17 | Mar 10 | Mar 4 |
| 32°F | Mar 31 | Mar 24 | Mar 18 | Mar 14 | Mar 10 | Mar 5 | Mar 1 | Feb 25 | Feb 17 |
| 28°F | Mar 16 | Mar 10 | Mar 6 | Mar 1 | Feb 26 | Feb 21 | Feb 14 | Feb 7 | Jan 28 |
| 24°F | Mar 8 | Feb 28 | Feb 21 | Feb 12 | Feb 4 | Jan 31 | Jan 26 | Jan 19 | Jan 5 |
| 20°F | Feb 25 | Feb 10 | Feb 2 | Jan 30 | Jan 25 | Jan 19 | Jan 14 | Jan 5 | Dec 27 |
| 16°F | Feb 10 | Jan 31 | Jan 27 | Jan 23 | Jan 18 | Jan 11 | Jan 6 | Jan 1 | Dec 26 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 22 | Nov 4 | Nov 21 |
| Freeze (32°F) | Nov 1 | Nov 16 | Dec 5 |
| Hard (28°F) | Nov 9 | Dec 1 | Jan 1 |
| Severe (24°F) | Nov 26 | Dec 24 | Jan 24 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 11 | Nov 15 | Nov 21 |
| 32°F | Nov 1 | Nov 5 | Nov 8 | Nov 13 | Nov 16 | Nov 20 | Nov 24 | Nov 29 | Dec 5 |
| 28°F | Nov 9 | Nov 17 | Nov 22 | Nov 27 | Dec 1 | Dec 3 | Dec 9 | Dec 19 | Jan 1 |
| 24°F | Nov 26 | Dec 2 | Dec 8 | Dec 14 | Dec 24 | Dec 31 | Jan 4 | Jan 10 | Jan 24 |
| 20°F | Dec 10 | Dec 22 | Dec 29 | Jan 2 | Jan 6 | Jan 10 | Jan 16 | Jan 22 | Feb 4 |
| 16°F | Dec 24 | Jan 1 | Jan 3 | Jan 7 | Jan 11 | Jan 15 | Jan 20 | Jan 27 | Feb 2 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Winnsboro 5 Sse, La, about 12.2 miles away@if(!empty($station['elevation_ft'])), at 80 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Wisner, LA?
On average, the last spring frost (32°F) around Wisner, LA is about Mar 10. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 17.
When is the first frost in the fall?
The first fall frost around Wisner, LA typically arrives about Nov 16. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Mar 10 on average, or Feb 17 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 250 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 71243 Planting calendar → Louisiana frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026